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Commit 26f2f199 authored by Dan Williams's avatar Dan Williams Committed by James Bottomley
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[SCSI] libsas: continue revalidation 



Continue running revalidation until no more broadcast devices are
discovered.  Fixes cases where re-discovery completes too early in a
domain with multiple expanders with pending re-discovery events.
Servicing BCNs can get backed up behind error recovery.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent b2311a28

drivers/scsi/libsas/sas_expander.c

+4 −4
Original line number Diff line number Diff line
@@ -2114,9 +2114,7 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev) 
	struct domain_device *dev = NULL;



	res = sas_find_bcast_dev(port_dev, &dev);

	if (res)

		goto out;

	if (dev) {

	while (res == 0 && dev) {

		struct expander_device *ex = &dev->ex_dev;

		int i = 0, phy_id;
@@ -2128,8 +2126,10 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev) 
			res = sas_rediscover(dev, phy_id);

			i = phy_id + 1;

		} while (i < ex->num_phys);



		dev = NULL;

		res = sas_find_bcast_dev(port_dev, &dev);

	}

out:

	return res;

}